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Self-riveting flapper valves

a flapper valve and self-riveting technology, applied in the field of valves, can solve the problems of high viscosity of engine oil and transmission fluid, disadvantageous impede circulation, and inability to easily flow through heat exchangers of automotive fluids, and achieve the effect of easy deformation

Inactive Publication Date: 2010-11-09
DANA CANADA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution ensures reliable sealing and efficient fluid flow management, maintaining high cooling performance in normal conditions while preventing starvation of downstream components during cold starts, without the need for oversized heat exchangers, thus optimizing size, weight, and cost.

Problems solved by technology

However, in cold ambient conditions, engine oils and transmission fluids can be highly viscous.
In such conditions, automotive fluids do not flow easily through heat exchangers.
As a result, in such conditions, the interposition of a heat exchanger in an oil circuit can disadvantageously impede circulation.
Structures of this type are known to avoid starvation of downstream components, but can suffer in that, in normal operating conditions, the flow is split between the heat exchanger and the bypass circuit.
This added size and weight, and the added costs associated therewith, are undesirable to automotive manufacturers.
Such construction is difficult to accomplish and suffers from a propensity to leak.
However, the rivet construction also has a propensity for leakage, and the riveted sub-assembly requires separate handling and increases the cost and complexity of the device.

Method used

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Examples

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Embodiment Construction

[0032]FIG. 1 shows a heat exchanger 22 having a spin-on oil filter 24 or similar fluid device mounted thereon. Heat exchanger 22 includes a flapper valve assembly 20 according to a preferred embodiment of the present invention, and a heat exchange element 28. Heat exchanger 22 preferably is in the form of a donut-type oil cooler, but it could be any other type of heat exchanger or any other type of fluid device. For the purposes of the present specification, the exact form of the heat exchange element 28 and the spin-on oil filter 24 are not considered to be part of the present invention.

[0033]The heat exchanger or donut cooler 22 is for use with a coolant circuit and lubrication or other fluid circuit and, by way of example, as indicated in FIG. 2, is mounted on a threaded pipe 26 attached to an engine block 27 (only partially shown in FIG. 2). Threaded pipe 26 extends through a clearance or hole 29 in heat exchanger 22 to permit the subsequent threaded attachment of the oil filter...

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PUM

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Abstract

A rivet-type flapper valve assembly for a fluid device has a main body part defining a valve orifice communicating with the fluid device. The main body part includes a pin or shaft of a rivet spaced adjacent to the valve orifice. The main body part is permanently attached to the fluid device, such as by brazing. A flapper valve is then mounted on the rivet shaft to cover the valve orifice, and the rivet shaft is deformed to retain the flapper valve in place.

Description

[0001]This application is a continuation-in-part of U.S. application Ser. No. 11 / 110,434 filed Apr. 20, 2005, now abandoned, the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention relates to valves, and in particular, to flapper valves.BACKGROUND OF THE INVENTION[0003]Automotive fluids, such as engine oil or transmission fluids, absorb heat in use. To prevent fluid deterioration, this heat often needs to be removed. Heat exchangers are commonly used for this purpose. Moreover, heat exchangers are known to perform this function adequately in moderate ambient conditions. However, in cold ambient conditions, engine oils and transmission fluids can be highly viscous. In such conditions, automotive fluids do not flow easily through heat exchangers. As a result, in such conditions, the interposition of a heat exchanger in an oil circuit can disadvantageously impede circulation. Starvation of some downstream components, like transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): F16K15/16
CPCF16K15/16F28F2250/06F28D9/00F28F27/02Y10S165/916Y10T137/0491Y10T137/7891Y10T137/7898
Inventor PERIC, YURICHEADLE, BRIAN E.
Owner DANA CANADA CORP